>>>jdw at eng.uah.edu 06/16/06 11:05 PM >>>
>> 3) You probably have not see an APRSdos vicinity plot
>>Correct. Even so, a report of "somewhere in the ...area of
>this digipeater" is fairly useless when the digi has a coverage
>radius of 30 or 40 miles...
I think I can summarize:
APRS is a global network and people sending messages from
their hand-held D7 HT can be anywhere on the planet. Localizing
the senders location to the nearest 30 to 40 miles out of a possible
12,500 miles is pretty good.
In otherwords, vicinity plotting is not trying to assign a specific
position, just let you know the best information that is available
from a messaging station (or status) until a good -posit- comes in.
There are two reasons why this is so important.
1) Some client programs will ignore a station until it sends a posit.
2) The current APRS-Internet Filterning systems (I think)
will not recognize a message sending station until it sends a posit.
If this is true, then this is a big problem for D7 users who need
to send a message from a new location. Pete can probably
correct me on this...
Bob